51357542920 has 32 divisors (see below), whose sum is σ = 117017193600. Its totient is φ = 20282977728.

The previous prime is 51357542843. The next prime is 51357542981. The reversal of 51357542920 is 2924575315.

It is a happy number.

51357542920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8123034 + ... + 8129353.

It is an arithmetic number, because the mean of its divisors is an integer number (3656787300).

Almost surely, 2^51357542920 is an apocalyptic number.

It is an amenable number.

51357542920 is an abundant number, since it is smaller than the sum of its proper divisors (65659650680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51357542920 is a wasteful number, since it uses less digits than its factorization.

51357542920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16252477 (or 16252473 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 51357542920 in words is "fifty-one billion, three hundred fifty-seven million, five hundred forty-two thousand, nine hundred twenty".